Fire-door construction



Aug. 13, 1929. L. s. SWEARENGIN FIRE DOOR CONSTRUCTION 2 Sheets-Sheet Filed June 15, 192 8 WZWQ AQAJ' ATTORNEY Aug. 13, 1929. L. s. SWEARENGIN FIRE? DOOR CONSTRUCTION Filed June 15, 1928 2 Sheets-Sheet A TTORNEY Patented Aug. 13, 1929.

LUTHER S. SWEARENGIN, OF WYANDOTTE COUNTY, KANSAS.

FIRE-DOOR CONSTRUCTION.

Application filed June 13,

The present invention relates to fire door construction, and aims to provide a simple and improved type of fire door comprising sections of fluted or corrugated metal placed together and secured with the ilutes or corrugations extending at right angles to each other and embracing a sheet of fireproof material, such as asbestos, between said sections.

One of the primary features of the 1nvention is the provision of an improved binder margin around the sections or panels of corrugated or fluted sheet metal, a simple and eilicient construction being provided for this purpose.

Another feature of the invention is the provision of an improved meansof securing together the adjoining margins of fire door sections, embodying the improved binder margin feature. i

A still further object of the invention is the provision of an improved loop or keeper element and method of mounting the same upon one face of "the tire door, for engagement with the usual rear binder arm our ployed in tire door construction.

Various minor features of lmprovements are contemplated in connection with the present invention, as will, bet hereinafter pointed out, and in order that the same may be fully understood toe invention w ll now he described by reference to the accompanying drawings illustrating one form of construction which I have devised for embodying the proposed improvements, after which the novel features and combinations will be set forth and claimed.

In the drawings Figure 1 is a front elevation illustrating a fire door construction embodying the present features of improvement; I

Figure 2 is an enlarged horizontal sectional view, representing a section taken .on the irregular line II-II of Figure 1;

Figure 3 is an enlarged vertical sectional View, representing a section taken on the line Ill-III of Figure 1;

Figures 4t and 5 are fragmentary detail views, also on an enlarged scale, showing parts of the astragal or jointing construction;

Figure 6 is an enlarged detail sectional 1928. Serial No. 285,037.

view illustrating the method of mounting the keeper member or loop for engagement with the rear binder element;

Figure 7 is a perspective view of said keeper or loop member; and

Figures 8 and 9 are fragmentary detail views showing opposite sides of a corner portion of the door construction.

Referring now to the accompanying drawings, these illustrate one type of the improved construction as comprising, for each section of the fire door, a pair of panels 10 of suitably fluted or corrugated material, these panels being superposed with the flutes or corrugations 12 of one panel extending at right angles to the flutes or corrugations 12 of the other panel, clearly represented in Figures 2 and 3, in which it show a sheet 14 of suitable fireproof material, such as asbestos, embraced between the panels. For securing the panels 10 with the asbestos between them, in this relation, l rivet the same by means of rows of rivets 15, each row extending along one of the corrugations of one panel with the rivets in each row spaced apart a distance equal to the distance between the corrugations 12 of the other panel. In practice, the rows of rivets 15 are spaced apart a distance equal to the width of the sheet material used, the margins of the sheet material preferably overlapping within. a corrugation 12, as clearly indicated at 16 in Figure 2, and at 17 in Figure 3.

For providing a binder margin around the outer edges of each fire door section, I employ inner and outer angle bars in the manner illustrated in Figures 2 and The inner angle bars 20 have one leg of each angle secured by rivets 21 to the exposed face of the corresponding or What I term the inner panel 10 of the door section, while the other leg of each angle bar 20 is secured by rivets 22 to a leg of one of the outer angle bars 28, the other legs of which are secured by rivets 2a to the exposed face of the other or outer panel. section of the door. The outer angle bars 23 thus completely surround both the panels of each door section and project entirely across the outer margins thereof into position for being secured by the rivets 22 to the outer legs of the angle bars 20, thereby providing construction for each door section.

a complete, simple and eflicient framework As illustrated in Figures 8 and 9, the angle bars are continued around the corner of each door section, the inner legs of the angle bars 20 having a V-cut 25 to permit bending of the outer leg of the angle for turning the corners, while the outer angle bars are also out or slit at the corners and the adjoining portions overlapped, as indicated at 26, for reinforcing the outer faces of the door sec tions at the corners.

For joining together a pair of door sections, I employ an astragal joint construction including a tie-plate 8O overlapping the ad oining margins of the sections, and the exposed angle legs of the corresponding angle bars 23, and secure the tie-plate in place by means of bolts 32 extending entirely through the panel margins and the parallel legs of both the angle bars 20 and 23 on opposite sides of the panels. The outer legs of the angles 20 and the adjacent superposed legs of the angle bars 23 are all secured together in section-connecting relation, bv

' means of suitable bolts 33, all as clearly illustrated in Figure2.

Suitable hanger devices 36 secured by bolts 87 to the top of the door sections are provided with rollers 38 for travel along a track plate 40 overhanging the door opening 42 as the door slides from open to closed position, and vice versa, between the usual s'ets of-front binder bracket-s 43 and rear binder brackets 44 secured to the wall 46 at opposite sides of the door opening 42. The usual retaining lugs or fingers are secured by rivets 47 or the like to the top of the door in position for extending between the Wall and track 40 to prevent disengagement of the rollers from the track in the outward swinging of the door. For engagement with each of the rear binder elements 44 when the door is in closed position (as illustrated in Figure 2), I provide a loop or keeper eleflment 48 having one side margin thereof beveled as indicated at 49 (see Fig. 7), and

the opposite ends of each loop or keeper are formed with stepped lugs 50 adapted to be seated within transverse flutes or corrugations 12 for rigid mounting of the loops or keepers, in which position they are secured by means of bolts 52 extending through openings 53 in the ends of the loops or keepers, said bolts 52 extending entirely through the panel structure as indicated in Figure 6. For clearing the rear binder element 44 in the travel of the door from open to closed position, or vice versa the projecting portions of the angles 20 and 23 are suitably cut or recessed as indicated at 5."), and the edges of the remaining portions of the angles preferably beveled, as indicated at 56 in Figures 4 and 5, so as thus to present no obstruction to proper clearance of the rear binders during such movements of the door.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A fire door construction comprising superposed metallic panels of fluted or corrugated sheet material having the flutes or corrugations of one panel extending at right angles to those of the other panel, and means binding the margins of said panels together comprising inner and outer angle bars embracing said margins between them with one leg of the outer angle bar surrounding the panels and extending continuously around the corners thereof and projecting across the outer margins therof, and being secured to one of the legs of the inner angle bar, the other legs of said angle bars being secured exteriorly to the exposed faces of said panels, respcctiv l 2. A sectional lire door construction comprising a pair of door sections each comprising superposed metallic panels of liutcd or corrugated sheet material, inner and outer angle bars surrounding the panels and having one of the legs of the inner bars secured to one of the legs of the outer bars and the other angle legs being secured to the exposed faces of said panels, respectively, and means binding together said sections in coplanar relation including means for securing together the adjoining superposed angle legs of said sections along the adjoining margins thereof at one face of the door constrm-tion and also a tie-plate overlapping the expo-ed angle legs lying flush with each other at the opposite face of the door construction.

3. A fire door construction comprising a panel. of fluted or corrugated sheet material and a keeper or rear binder loop secured to the exterior faces of one of said panels and having rigid lug projections angular-1y arranged for engaging the outer face of the panel and also fitting within the flutes or corrugations thereof.

In witness whereof I hereunto allix my signature.

LUTHER S. SIVEARENGIN. 

